@article{TRSPY_2003_243_a9,
     author = {V. I. Burenkov and V. A. Gusakov},
     title = {On {Sharp} {Constants} in {Inequalities} for the {Modulus} of {a~Derivative}},
     journal = {Informatics and Automation},
     pages = {104--126},
     publisher = {mathdoc},
     volume = {243},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2003_243_a9/}
}